Hello and good day to you...
I am looking at the Service Manual for your Printer.
In your case Sir or Ma'am it would be better to take it to a local repair shop than to attempt the repair your self.
Chime in when ready.
Hello. I am assuming the natural force of the door opening has dislocated or perhaps broken something inside. Is there any way to access the mechanism in side the door, or is it all factory sealed. I cannot see any screws or clip positions. Is there a particular type of repair shop that would be best placed to help?
Yes there is..
Depending upon where you are in jolly Olde England, just a Cannon repair shop. What is the closest major city near you?
Epsom, Surrey (main town). Otherwise perhaps Kingston or London
Forgive the question, but do you see much owl's near you??? A h
Harry Potter reference.
Haven't read HP
We have song birds and occasional woodpeckers
Hold on please...
http://www.123printerspecialist.co.uk/north-london/london/ they have an excellent rating and are located in North London. Here is another:
These blokes gave an excellent rating and fix all of Canons printer models.
Lastly there is:
Hmmm. None of them very local. Will ask around. Thank you for trying.
Rating because unable to provide a fix directly.
Poor Rating, why is that???
Closer to you in Surrey...
Lastly there is: http://www.surrey-printer-repairs.co.uk/
Also in Surrey.
If I may point this out, it us broken. You do not have the skills or tools to effect repairs.
My only option is to refer you to a local repair shop. Also your question asked for suggestions. I have answered your question.
As per your question. The repair should take less than 10 minutes and cost less than £20.00 if not free.
That's much more useful. Re my skills and tools etc, I have been taking computers apart and rebuilding them for over 25 years, although printers are always more difficult and becoming more so. Will upgrade the rating for you, for your kind efforts.